*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --sidebar-w: 240px;
  --bg: #f4f6f9;
  --sidebar-bg: #1e2a3a;
  --sidebar-hover: #2c3e52;
  --sidebar-active: #2980b9;
  --accent: #2980b9;
  --accent-dark: #1f618d;
  --text: #2c3e50;
  --text-light: #7f8c8d;
  --card-bg: #ffffff;
  --border: #e0e6ed;
  --success: #27ae60;
  --warning: #f39c12;
  --danger: #e74c3c;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--bg);
  color: var(--text);
  display: flex;
  min-height: 100vh;
}

/* ── Sidebar ── */
.sidebar {
  width: var(--sidebar-w);
  background: var(--sidebar-bg);
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0; left: 0; bottom: 0;
  z-index: 100;
}

.sidebar-logo {
  padding: 24px 20px 20px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}

.sidebar-logo .app-name {
  color: #fff;
  font-size: 17px;
  font-weight: 700;
  letter-spacing: 0.3px;
}

.sidebar-logo .app-sub {
  color: rgba(255,255,255,0.45);
  font-size: 11px;
  margin-top: 2px;
}

.sidebar-nav {
  flex: 1;
  padding: 12px 0;
  list-style: none;
}

.sidebar-nav li a {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 11px 20px;
  color: rgba(255,255,255,0.65);
  text-decoration: none;
  font-size: 14px;
  border-left: 3px solid transparent;
  transition: background 0.15s, color 0.15s;
}

.sidebar-nav li a:hover {
  background: var(--sidebar-hover);
  color: #fff;
}

.sidebar-nav li a.active {
  background: var(--sidebar-hover);
  color: #fff;
  border-left-color: var(--sidebar-active);
}

.sidebar-nav .nav-icon {
  font-size: 16px;
  width: 20px;
  text-align: center;
}

.sidebar-section {
  padding: 20px 20px 8px;
  font-size: 10px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: rgba(255,255,255,0.3);
}

.sidebar-footer {
  padding: 16px 20px;
  border-top: 1px solid rgba(255,255,255,0.08);
  font-size: 12px;
  color: rgba(255,255,255,0.3);
}

/* ── Main ── */
.main {
  margin-left: var(--sidebar-w);
  flex: 1;
  display: flex;
  flex-direction: column;
}

.topbar {
  background: var(--card-bg);
  border-bottom: 1px solid var(--border);
  padding: 0 28px;
  height: 58px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 50;
}

.topbar-title {
  font-size: 16px;
  font-weight: 600;
}

.topbar-meta {
  font-size: 13px;
  color: var(--text-light);
}

.content {
  padding: 28px;
  flex: 1;
}

/* ── Cards ── */
.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 16px;
  margin-bottom: 28px;
}

.stat-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 20px;
}

.stat-card .stat-label {
  font-size: 12px;
  color: var(--text-light);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 8px;
}

.stat-card .stat-value {
  font-size: 32px;
  font-weight: 700;
  line-height: 1;
}

.stat-card .stat-value.accent  { color: var(--accent); }
.stat-card .stat-value.success { color: var(--success); }
.stat-card .stat-value.warning { color: var(--warning); }
.stat-card .stat-value.danger  { color: var(--danger); }

.stat-card .stat-sub {
  font-size: 12px;
  color: var(--text-light);
  margin-top: 6px;
}

/* ── Table card ── */
.card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
  margin-bottom: 24px;
}

.card-header {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.card-title {
  font-size: 14px;
  font-weight: 600;
}

.badge {
  display: inline-flex;
  align-items: center;
  padding: 2px 9px;
  border-radius: 12px;
  font-size: 11px;
  font-weight: 600;
}

.badge-accent  { background: #d6eaf8; color: var(--accent-dark); }
.badge-success { background: #d5f5e3; color: #1e8449; }
.badge-warning { background: #fef9e7; color: #b7770d; }
.badge-danger  { background: #fdedec; color: #c0392b; }
.badge-neutral { background: #eaecee; color: #626567; }

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13.5px;
}

th {
  padding: 11px 16px;
  text-align: left;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-light);
  background: #f8f9fa;
  border-bottom: 1px solid var(--border);
}

td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  vertical-align: middle;
}

tr:last-child td { border-bottom: none; }
tr:hover td { background: #f8fbff; }

.odp-code {
  font-weight: 600;
  color: var(--accent-dark);
  font-family: 'Courier New', monospace;
  font-size: 13px;
}

/* ── Notice ── */
.notice {
  background: #eaf4fb;
  border-left: 4px solid var(--accent);
  border-radius: 4px;
  padding: 14px 18px;
  font-size: 13.5px;
  color: var(--accent-dark);
  margin-bottom: 24px;
}

/* ── Settings ── */
.settings-section {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 24px;
  margin-bottom: 20px;
}

.settings-section h2 {
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border);
}

.form-row {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 16px;
}

.form-row label {
  font-size: 13px;
  font-weight: 500;
}

.form-row input, .form-row select, .form-row textarea {
  padding: 9px 12px;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 13.5px;
  color: var(--text);
  background: #fff;
  outline: none;
  transition: border-color 0.15s;
}

.form-row input:focus, .form-row select:focus, .form-row textarea:focus {
  border-color: var(--accent);
}

.form-row .hint {
  font-size: 12px;
  color: var(--text-light);
}

.btn {
  padding: 9px 20px;
  border-radius: 6px;
  font-size: 13.5px;
  font-weight: 500;
  cursor: pointer;
  border: none;
  transition: background 0.15s;
}

.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-dark); }